#include<stdio.h>

int AddToTarget(int start,int end)
{
  int i=start;
  int sum=0;
  for(;i<=end;i++)
  {
    sum+=i;
  }
  return sum;
}
int main()
{
  printf("run begin...\n");

  int res=AddToTarget(1,100);
  printf("%d\n",res);

  printf("run end...\n");

  return 0;
}
